"the rachel maddow show" starts right now. good evening, rachel. >> good evening, thank you very much. thanks to you at home for joining us on a day when honestly any one in about five different big, national, leave-the-news stories would have every network newscast to itself were it not for all the other big national lead-the-news stories that are breaking today, vying for that top of the news position. the national republican party today abandoned mark sanford, who used to be the governor of south carolina and was a presidential hopeful at one point. today, his party abandoned his effort to get back into office in congress. that kind of politics story might very well lead the national news, but not on a day like today. today we got arrests and a confession and at least an implicit explanation in the murder of those two prosecutors in kaufman county, texas. the assistant d.a. killed in january, the d.a. himself, and his wife killed in march, as of today, finally, we know who did it. or at least who has confessed, and it is no